Abstract

We present a reliable and robust integrated fluorescence detector capable of detecting single atoms. The detector consists of a tapered lensed single-mode fiber for precise delivery of excitation light and a multimode fiber to collect the fluorescence. Both are mounted in lithographically defined SU-8 holding structures on an atom chip. Rb87 atoms propagating freely in a magnetic guide are detected with an efficiency of up to 66%, and a signal-to-noise ratio in excess of 100 is obtained for short integration times.

L. Mandel and E. Wolf, Rev. Mod. Phys. 37, 231 (1965). To calculate the mean and variance we use pphoton(n)=∑m=0∞pat(m)(αm)nn!e−αm, where pat(m) is the probability to have m atoms in the considered time interval. Each atom emits on average α photons.
[CrossRef]

L. Mandel and E. Wolf, Rev. Mod. Phys. 37, 231 (1965). To calculate the mean and variance we use pphoton(n)=∑m=0∞pat(m)(αm)nn!e−αm, where pat(m) is the probability to have m atoms in the considered time interval. Each atom emits on average α photons.
[CrossRef]

L. Mandel and E. Wolf, Rev. Mod. Phys. 37, 231 (1965). To calculate the mean and variance we use pphoton(n)=∑m=0∞pat(m)(αm)nn!e−αm, where pat(m) is the probability to have m atoms in the considered time interval. Each atom emits on average α photons.
[CrossRef]

Rev. Mod. Phys.

L. Mandel and E. Wolf, Rev. Mod. Phys. 37, 231 (1965). To calculate the mean and variance we use pphoton(n)=∑m=0∞pat(m)(αm)nn!e−αm, where pat(m) is the probability to have m atoms in the considered time interval. Each atom emits on average α photons.
[CrossRef]

L. Mandel and E. Wolf, Rev. Mod. Phys. 37, 231 (1965). To calculate the mean and variance we use pphoton(n)=∑m=0∞pat(m)(αm)nn!e−αm, where pat(m) is the probability to have m atoms in the considered time interval. Each atom emits on average α photons.
[CrossRef]

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